first, two people were killed in a head-on collision in byron yesterday and then last night in concord a 21-year-old man riding a skateboard was hit and killed. police say a 21-year-old creighton woman was driving a chevy tahoe when she hit the skateboarder. police say the concord man was in the crosswalk when he was hit. he suffered major injuries and died at the hospital. traffic was detoured for hours for the police investigation. the byron highway and contra costa road open this morning after two people were killed there, including a young boy. the accident happened around 3:30 on the stretch of highway that crosses the california aqua duct. witnesses say the driver of an 88 oldsmobile swerved across the yellow line and snatched into the big rig. the boy, believed to be between 8 and 9 years old, died at the scene. the driver, a 21-year-old woman from bay point, died at the hospital. the supreme court said it will take up two same-sex marriage cases, including california's proposition 8. >> i have been waiting for three years to enjoy the same privilege these folks are enjoying. >>